(19)
(11) EP 1 936 123 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
11.05.2011 Bulletin 2011/19

(43) Date of publication A2:
25.06.2008 Bulletin 2008/26

(21) Application number: 07254617.9

(22) Date of filing: 28.11.2007
(51) International Patent Classification (IPC): 
F01D 25/18(2006.01)
F01D 9/06(2006.01)
F16N 31/00(2006.01)
F02C 7/06(2006.01)
F16C 33/66(2006.01)
(84) Designated Contracting States:
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC MT NL PL PT RO SE SI SK TR
Designated Extension States:
AL BA HR MK RS

(30) Priority: 12.12.2006 US 609428

(71) Applicant: United Technologies Corporation
Hartford, CT 06101 (US)

(72) Inventors:
  • Dibenedetto, Enzo
    Torrington, Connecticut 06790 (US)
  • Davis, Todd A.
    Tolland, Connecticut 06084 (US)

(74) Representative: Leckey, David Herbert 
Dehns St Bride's House 10 Salisbury Square
London EC4Y 8JD
London EC4Y 8JD (GB)

   


(54) Oil scavenge system for a gas turbine engine


(57) An oil scavenge system includes a scavenge pipe (44) which extends forward into a relatively long and narrow compartment area (34) of a rear bearing compartment (28) of a gas turbine engine with aggressive core size constraints. The scavenger pipe (44) communicates collected oil to a scavenger pump (P2) to return oil to the oil sump (38) and evacuate the oil before flooding of the seals may occur.







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